Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1997-05-20
2000-09-05
Lam, Cathy F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
428327, 442 59, 442 70, 442 74, 174148, 174258, 361746, 257673, 257675, 257734, 257737, B32B 512
Patent
active
061140058
ABSTRACT:
A laminate capable of mounting semiconductor elements thereon; comprising an insulating layer which is constituted by a resin portion of sea-island structure and a woven reinforcement. The resin portion of sea-island structure is, for example, such that a resin as islands are dispersed in a resin as a matrix. Thus, the insulating layer exhibits a coefficient of thermal expansion of 3.0.about.10 (ppm/K) in a planar direction thereof and a glass transition temperature of 150.about.300 (.degree.C.). Owing to these physical properties, thermal stresses which the laminate undergoes in packaging the semiconductor elements thereon can be reduced, so that the connections of the laminate with the semiconductor elements can be made highly reliable.
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Anjoh Ichiro
Eguchi Shuji
Ishii Toshiaki
Kokaku Hiroyoshi
Moteki Ryo
Hitachi , Ltd.
Lam Cathy F.
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